This is the fourth song in the Doomsday Series. *Hello, Planet. tells the story of an android (portrayed by Miku) who wakes up alone in a shelter. She discovers that the world is in an apocalyptic state. She sets herself to take care of the pot containing the last surviving plant. She waits for it to sprout, and to receive a message from the exterior of the shelter. With neither situation taking place and her master missing, she takes the plant and embarks in a journey to find him. Main article: Doomsday Series